Help identifying a part

Question

I have a 99 gmc c3500 and it's leaking coolant on the left side of the engine from what looks like to be a plug that is the same size of the temperature sensor, it looks like it can be removed with a special tool that is square. It's slightly too small to fit a normal 3/8 rachet but its also slightly too big that a 1/4 rachet barely gets a grip and will most likely strip it if i try to remove it with the 1/4. Can anyone tell me the name so I can repair the truck properly? I went to autozone and showed a guy what it with pictures and location but he couldn't help me on what it was all he wanted to do was try to sell me another temperature sensor but I don't need two sensors

MountainManJoe · Accepted Answer

Post a photo please. See the forum guide on the front page

Justin Shepherd · Answer

[quote data-userid="180175423" data-postid="331319"] Okay, I dont think I can edit my original question so I will just post a new one with the link to the image thanks for the help I thought I added the link [/quote] You don't need to add another question. Just post an image link in the Your Response text box so that we can keep it in the same thread. Somebody else will know what it is. You can use websites like Imgur, select your picture, then hit share links and a selection that will say forums. Hit that, then share it here.    Thanks.

Chuck Tobias · Answer

[quote data-userid="180175423" data-postid="331321"] Hope i did the link correctly this time. [/quote] If you have not already done so please read the forum rules posted near the top of the main page. Posting multiple topics about the same vehicle is not permitted. You can add additional information as a response to your original topic. Thank you. (Topics merged.) - Forum Rules - Be respectful to everyone in the forum One question per post, and one post per question. No swearing or profanity allowed No racist or derogatory posts / comments allowed No threats or violence of any kind will be allowed No drug or illegal substance mentioning at any time No re-posting of copyrighted materials or other illegal content allowed No adult content or pornography is allowed No spam. No automated messages, advertisements, or links to competitor websites will be allowed No multiple posts of the same thing, if you continue to make multiple duplicate posts you will be banned Trolls will be removed immediately and without warning. One forum account allowed per person. Anyone in violation of these rules will be banned.